Quantitative trait locus mapping of yield and plant height in autotetraploid alfalfa(Medicago sativa L.)

作     者：Fei He Ruicai Long Tiejun Zhang Fan Zhang Zhen Wang Xijiang Yang Xueqian Jiang Changfu Yang Xuxin Zhi Mingna Li Longxi Yu Junmei Kang Qingchuan Yang Fei He;Ruicai Long;Tiejun Zhang;Fan Zhang;Zhen Wang;Xijiang Yang;Xueqian Jiang;Changfu Yang;Xuxin Zhi;Mingna Li;Longxi Yu;Junmei Kang;Qingchuan Yang

作者机构：Institute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China Plant and Germplasm Introduction and Testing ResearchUnited States Department of Agriculture-Agricultural Research ServiceProsserWA 99350USA 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2020年第8卷第5期

页      面：812-818页

核心收录：

学科分类：090503[农学-草业科学] 0909[农学-草学] 0905[农学-畜牧学] 09[农学] 

基　　金：The authors thank the reviewers for their valuable comments on this manuscript and gratefully acknowledge the financial support for this study provided by grants from the Collaborative Research Key Project between China and EU(granted by the Ministry of Science and Technology of China,2017YFE0111000) the China Forage and Grass Research System(CARS-34) the Agricultural Science and Technology Innovation Program of CAAS(ASTIP-IAS14) the National Natural Science Foundation of China(31772656) 

主　　题：Alfalfa Yield Plant height Genetic linkage map Quantitative trait loci 

摘      要：Alfalfa(Medicago sativa L.)is the most widely grown forage legume crop *** and plant height are important agronomic traits influenced by genetic and environmental *** objective of this study was to identify quantitative trait loci(QTL)and molecular markers associated with alfalfa yield and plant *** understand the genetic basis of these traits,a full-sib F1 population composed of 392 individuals was developed by crossing a low-yielding precocious alfalfa genotype(male parent)with a high-yielding latematuring alfalfa cultivar(female parent).The linkage maps were constructed with 3818 single-nucleotide polymorphism(SNP)markers on 64 linkage *** for yield and plant height were mapped using phenotypic data for three *** QTL associated with yield and plant height were identified on chromosomes 1 to *** QTL explained more than 10%of phenotypic variation,representing major loci controlling yield and plant *** locus on chromosome 1 controlling yield traits had not been identified in previous *** QTL co-located with other QTL(qyield-1 and qheight-7,qheight-5 and qyield-4,qheight-6,and qyield-6).With further validation,the markers closely linked with these QTL may be used for marker-assisted selection in breeding new alfalfa varieties with high yield.